Spark-arrester



(No-Model.)

T LEE SPARK ARRBSTER.

PatentedrSept; 15

ATnNT NTTED STATES i Trice.

THOMAS LEE, OF HOME CITY, OHIO.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 567,601, dated September 15, 1896. Application filed July 13, 1896. Serial No. 598,915. (No model.)V

.To all whom t may concern: 7. Vithin this upper wider part is suitably Be it known that I, THOMAS LEE, a citizen supported, preferably by resting on braces 8, of the United States, and aresident of Home a deiiector 9, being of the shape of an in- 55 City, Hamilton county, State of Ohio, have verted cone and of a size suiiicientlyreduced 5 invented certain new and useful Improveto leave an annular passage 10 between it and ments in Spark-Arresters; and I do declare the outwardly-flaring part 7 of the smokethe following to be a clear, full, and exact stack. Within this detlector and supported description of the invention, such as will enon its upper edge is a separator 11, also of in- 6o able others skilled in the art to which it apverted-cone shape, but of less depth than the 1o pertains to make and use the same, attention deilector-cone, so as to leave an air-space 12 being called to the accompanying drawings, between the two cones. This space is inwith the reference-numerals marked thereon, tended to serve as a non-conductor of heat which form a part of this specification. and for such ypurpose may be left empty or 65 This invention relates to spark-arresters as be packed with asbestos, mineral wool, or 15 used on top of smoke-stacks, for the purpose other similar substances.

of detaining the red-hot cinders or sparks The upper end of the out-flaring part 7 of carried up by the smoke, and it relates parthe smoke-stack is turned over inwardly and ticularly to such stacks through which, also, down, as shown at 13, the downward turn be- 7o in addition to the smoke, the exhaust-steam ing at such an angle as to guide and throw 2o from steam-engines or other sources passes the smoke and steam rising up in and enterout, as, for instance, in locomotive smokeing from passage 10 into separator 11. By stacks. the time smoke and steam have made the re- It relates particularly to improvements on quired turn in their passage to enable them 75 the spark-arrester shown in my Patent No. to enter this separator the velocity of their 25 537,048, dated April 9, 1895, which is intended current and their density have decreased to for use on locomotive smoke-stacks, the parsuch an extent as to make them unable to ticular object of that spark-arrester being to carry the cinders thus far suspended any provide a construction which does not interfurther, which latter drop partly before and 8o fere with the draft, and also prevents condenfinally when coming in contact with the in- 3o sation of the out-passing steam while coming terior surface of the separator, on which surin contact with parts of the spark-arrester. face they slide down to an outlet-pipe 14, Since the issue of that patent, and after practhrough which they pass off. This pipe is of tical experiments and tests meanwhile made, large diameter at its entrance to a'fl'ord quick 85 various imperfections have been found which relief to the cinders as they arrive thereat. 3 5 require correction and by this invention are Smoke and steam pass off in opposite direcsought to be improved. tions through an outlet above the separating- The novel features of this present invenchamber. Around the upper edge of the lattion are particularly pointed out inthe folter is provided an i ntu rned lip 15, which pre- 9o lowing speci'flcation,which containsadescripvents the cinders, after once thrown against 4o tion of them, together with their operation, the inner surface of the separator, from being parts, and construction, which latter is also forced back again over the upper edge of the illustrated in the accompanying drawings, in same by the smoke rising therefrom. which Part of the steam after arriving within the 95 Figure 1 is a vertical section through the separator becomes condensed by reason of 45 smoke-stack of a locomotive provided at its this latter being cooler from its exposure to upper end with my improved spark-arrester. the outer air than the steam, which conden- Fig. 2 is a top view of Fig. 1 with parts sation also passes off through pipe 14. broken awaygand Fig.` 3 is part of a side` Condensation of the steam rising withinvioo elevation, looking at it` from the right,'as passage 10 is prevented by defieetor 9, which p 5o shown in Fig. 1. keeps the former from coming in contact with 6 is a part of a suitable smoke-stack tlarthe cooler under surface of the separator, ing outwardly at its upper end, as shown at while the deflector is prevented from becoming cooled by reason of the non-conducting space 12 between the two cones.

Passage 10 varies in width and becomes narrower toward the top to prevent its total area from becoming too large by reason of the upwardly-increasing diameter at the upper end of the stack and to retain its proper size proportional to the lower part of the latter. In the upper turn of this passage and piercing the inturned part of the stack are apertures 18, small enough to prevent cinders to pass, but sufficiently large for steam to pass out to relieve its excessive pressure should it occur and cause possibly a choking of the passage at this point. To prevent these apertures from becoming choked up by cinders driven against or into theln or held there by the pressure of the steam, I provide a plate 19, suitably supported by braces 20 or otherwise and some distance below the upper inwardly-curved part of the cone 7, with which part it is parallel. The office of this plate, which may also be perforated, is to arrest most of the cinders as they arrive from below, causing also the larger ones as they are driven against it to be broken up. Steam and smoke passing through on both sides of this plate, the pressure becomes equalized and the openings are not apt to become obstructed.

Around the outside of the upper end of cone 7 and projecting above the perforated part thereof is a flange 21, the object of which is to prevent interference with the draft through openings 1S or prevent egress therethrough being cut off by the air while the locomotive is moving. I-Ioles 22 near its lower edge prevent accumulation of any kind back of it.

Part of the steam and smoke within cone 11 escapes occasionally downwardly through pipe 14, whereby the ready discharge of the separated cinders is assisted. Vapors so diverted are prevented, however, from escaping through pipe 14 by a llue 17 with an enlarged mouth, which intercepts their passage and conducts them to the top of the stack, where they escape.

It is obvious that plate 19 and flange 21 are not necessarily limited to be used in connection with a spark-arrester constructed in all details precisely like the spark-arrester described in my former patent above referred to.

Having described my invention, I claim as new- 1. In a spark-arrester, the combination of the upper outwardly-flaring part of the smoke-stack, a separator 11 supported within this flaring part, being of sufficiently-reduced diameter to produce an annular passage 10 between it and the stack, the upper end of which latter is turned over and in as shown in a manner to guide the discharge Jfrom passage 10 into separator 1l, openings 18 in the upper part of this inturned end of the stack, a plate 19 supported below this inturned end and in the upper turn of passage 10, an outlet for smoke and steam and an outlet for the cinders precipitated within separator 11.

2. In a spark-arrester, the combination of the upper outwardlyllaring part of the smoke-stack, a separator 11 supported within this flaring part, being of sufficiently-reduced diameter to produce an annular passage l0 between it and the stack, the upper end of which latter is turned over and in as shown in a manner to guide the discharge from passage 10 into separator l1, openings 18 in the upper part of this inturned end of the stack, a flange 21 raised around the outside of the stack projecting above the upper perforated end thereof, an outlet for smoke and steam and an outlet for the cinders precipitated within separator 11.

3. In a spark-arrester, the combination of the upper outwardly flaring part of the smoke-stack, a separator 11 supported within this flaring part, being of sufficiently-reduced diameter to produce an annular passage 10 between it and the stack, the upper end of which latter is turned over and in as shown in a manner to guide the discharge from passage 10 into separator 11, openings 18 in the upper part of this inturned end of the stack, an outlet for smoke and steam and an outletpipe 14 for the cinders precipitated within separator 11 having an enlarged opening at its mouth where it starts from the latter.

4. In a spark-arrester, the combination of the upper outwardly flaring part of the smoke-stack, a separator 11 supported within this flaring part, being of su ficiently-reduced diameter to produce an annular passage 10 between it and the stack, the upper end of which latter is turned over and in as shown in a manner to guide the discharge from passage 10 into separator 11, openings 18 in the upper part of this inturned end of the stack, a plate 19 supported below this inturned end and in the upper turn of passage 10, a flange 21 raised around the outside of the stack projecting above the upper perforated end thereof, an outlet for smoke and steam and an outlet for the cinders precipitated within separator 11.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

THOMAS LEE.

TOO

IIO 

